#90DaysOfDevOps - Day 23
Let's see how to use Jenkins for Freestyle Project to use docker and docker-compose.
What is CI/CD?
CI or Continuous Integration is the practice of automating the integration of code changes from multiple developers into a single codebase. It is a software development practice where the developers commit their work frequently to the central code repository (Github or Stash). Then there are automated tools that build the newly committed code and do a code review, etc as required upon integration. The key goals of Continuous Integration are to find and address bugs quicker, make the process of integrating code across a team of developers easier, improve software quality and reduce the time it takes to release new feature updates.
CD or Continuous Delivery is carried out after Continuous Integration to make sure that we can release new changes to our customers quickly in an error-free way. This includes running integration and regression tests in the staging area (similar to the production environment) so that the final release is not broken in production. It ensures to automate the release process so that we have a release-ready product at all times and we can deploy our application at any point in time.
What Is a Build Job?
A Jenkins build job contains the configuration for automating a specific task or step in the application building process. These tasks include gathering dependencies, compiling, archiving, or transforming code, and testing and deploying code in different environments.
Jenkins supports several types of build jobs, such as freestyle projects, pipelines, multi-configuration projects, folders, multibranch pipelines, and organization folders.
For all the key terms of Jenkins- check here.
What are Freestyle Projects ??
A freestyle project in Jenkins is a type of project that allows you to build, test, and deploy software using a variety of different options and configurations. Here are a few tasks that you could complete when working with a freestyle project in Jenkins:
Task 1: Docker
Create a new Jenkins freestyle project for your app.
Click on 'New item' and enter the name of the project and select 'Freestyle Project'. Add the GitHub path where your dockerfile is present.
In the "Build" section of the project, add a build step to run the "docker build" command to build the image for the container.
Add a second step to run the "docker run" command to start a container using the image created in step 3.
Install the required Docker plugins to use Docker in Jenkins and build the job.
Task 2: Docker-compose
- Create a Jenkins project to run the "docker-compose up -d" command to start the multiple containers defined in the compose file.
Make a new project and add a GitHub path where your docker-compose.yaml is present. Make sure that docker-compose is installed in your system.
Add this build step to start the container.
We can see that the it has successfully built.
The container is up. The website is working on port 8000.
- Set up a cleanup step in the Jenkins project to run the "docker-compose down" command to stop and remove the containers defined in the compose file.
Add another build step to delete the containers.
We can see that Jenkins has built and then deleted the container.
Thankyou.